Eraser with magnetic supporting means



Jan. 27, 1948. R. M. WILLIAMS ERASER WITH MAGNETIC SUPPORTING MEANSFiled Oct. 1, 1945 //VI/EN TOR RALPH m. w/u/A/vs ATTORNEY Patented Jan.27, 1948 MEAN Ralph M. Williams, Wellington; Kans.

Application October 1, 1945,'Serial No.'619,630

7 Claims. (01. 120-36) "This invention relates'to erasers of'the typeused by typists for making erasures upon papers in a typewriter. Sucherasers are circular and mounted about a metal sleeve and since they areplaced upon a typewriter stand or desk when not in use they often slideoff the stand or desk, or are accidentally covered by papers andconcealed from view. This is very annoying as a search for the erasermust be made when it is needed and it is therefore one object of theinvention to provide an eraser having a, magnet mounted through itssleeve so that by placing the eraser against a portion of the metaltypewriter it will be held to the typewriter in such position that itwill be in view and may be readily removed for use when needed.

Another object of the invention is to provide an eraser of conventionalsize so formed that when the eraser is worn to such an extent that it isno longer usable it may be removed from the sleeve about which it ismounted and another applied. Thus eliminating the necessity ofdiscarding the sleeve and the magnet when the eraser is worn out.

Another object of the invention is to provide an eraser which is simplein construction and may be manufactured at small cost.

The invention is illustrated in the accompanying drawings wherein:

Fig. 1 is a side view of the improved eraser.

Fig. 2 is a view showing the eraser clinging to a portion of atypewriter.

Fig. 3 is a sectional view taken diametrically through the eraser.

Fig. 4 is a side view of an eraser having a modified construction.

Fig. 5 is a sectional view taken diametrically through the eraser shownin Figure 4.

This improved eraser has the usual erasing element I formed of rubberwhich may be of the type used for erasing pencil marks or of the typecontaining sand and used for erasing ink. This eraser I has been showncircular but it will be understood that it may be of any shape desiredprovided it is formed with a central opening to receive a ring or sleeve2. This ring or sleeve may be formed of magnetic or non-magnetic metal,plastic, or other suitable material and while the sleeve has been shownformed as a single unit it will be understood that it may be formed oftwo rings disposed in side by side relation to each other if so desired.This ring fits snugly in the opening of the eraser and its flangesoverlap side faces of the eraser to such an extent that the eraser willbe held in place about the ring. When the eraser becomes worn to such anextent that it is'no longer usable it may be removed and another easilyapplied. A permanent magnet 4 formed of hard steel is fitted through thering or sleeve 2 and is of such thickness that the sleeve fits tightlyabout it and of such length that its end portions project from oppositeends of the sleeve as shown in Figures 2 and 3. Since the magnet has itsends projecting from the sleeve it may have either end disposed againsta portion of the metal frame of a typewriter, as shown in Figure 2, andit will cling to the typewriter until the eraser is grasped andintentionally removed for use. It will thus be seen that the eraser willbe firmly but detachably held in such position that it will not becomelost and may be conveniently reached and removed for use. If so desireda steel thumb tack may be pressed into an edge face of a desk or woodenwindow sill and the core or magnet of the eraser applied to the head ofthe thumb tack instead of to a position of the typewriter.

ln Figures 4 and 5 there has been shown an eraser of a modifiedconstruction wherein the permanent magnet 5 is of appreciably lessdiameter or thickness than the magnet 4. This magnet 5 fits into anon-magnetic sleeve 6 formed of mica or other suitable material andmounted through an opening in the center of a disk 1 formed of plastic,soft iron, or other material and the disk is formed about its peripherywith flanges 8 defining a groove into which fits the eraser 9corresponding to the eraser I. The magnet 5 and the sleeve 8 are of alength corresponding to the thickness of the disk I but ends of themagnet are fully exposed so that when the eraser is applied to the metalframe of a typewriter the magnet will cling to the typewriter anddetachably hold the eraser in position to be readily grasped and removedfor use.

Having thus described the invention, What is claimed is:

1. In combination with an eraser, a magnet mounted through the eraserwith ends exposed at opposite sides thereof in position for engagementwith a metal member whereby the eraser will be held to the said metalmember in position to be grasped and removed for use.

2. In an eraser, a body of erasing material, a sleeve mounted throughthe said body of erasing material, and a permanent magnet mountedthrough said sleeve with its ends exposed for contact with a metalmember whereby the magnet will cling to the metal member and hold theeraser in position to be grasped and readily re moved for use.

3. In an eraser, a sleeve having flanges about its peripheiy spaced fromeach other and defining a circumferentially extending seat, a. body oferasing material surrounding said sleeve and fitting into the seatbetween the flanges, and a permanent magnet fitting snugly in saidsleeve with its ends exposed.

4. In an eraser, a sleeve formed about its outer periphery with flangesspaced from each other and defining a circumferentially extending seat,a body of erasing material about said sleeve removably mounted in saidseat, and a permanent magnet extending through the sleeve with its endportions projecting from ends of the sleeve.

5. In an eraser, a disk formed with a central opening and having flangesabout its outer peripherial edges face spaced from each other anddefining a circumferentially extending seat, a body of erasing materialfitting about the disk and mounted in the seat, a sleeve of non-magneticmaterial fitting snugly through the central RALPH M. WILLIAMS.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Name Date Dunn Dec. 30, 1941 Number

